Build a Minecraft Map Xbox

I am looking for someone to build a Minecraft map on Xbox. I am not sure how this would work or if it is possible. My son has Autism and LOVES Minecraft and keeps asking me to build him a cruise ship map. We found one to buy but he wants a replica of Royal Caribbean Wonder of the Seas. I have never played Minecraft so I would be at a loss to try. I am hoping someone could maybe build that cruise ship ontop of his other favorite map(SpongeBobs house). Or take that cruise ship map we already have and modify it to turn into wonder of the seas.

Any help or direction would be great.